0102030405
SFM472 Three Phase Multifunction Meter - China Suppliers and Factory for Accurate Power Monitoring
Product Description
Core Measurement Capabilities
The SFM472 series meter is calibrated to provide accurate readings of the following key electrical parameters, supporting both balanced and unbalanced load conditions:
- Voltage: Line-to-line (L1-L2, L1-L3, L2-L3) and line-to-neutral (L1-N, L2-N, L3-N) RMS voltage
- Current: RMS current for each of the three phases
- Power: Active power, reactive power, and apparent power (per phase and total system values)
- Frequency: Grid frequency fluctuations
- Energy: Import (consumed) and export (fed-back) active and reactive energy, with cumulative metering functionality
System Integration & Application Flexibility
Designed for versatility, the SFM472 series meter caters to dual operational modes to meet diverse on-site requirements:
01
Local Display Function
The meter features an on-board display that provides real-time visualization of measured parameters, enabling field personnel to conduct quick spot checks and verify system performance without additional equipment.
02
Centralized Measurement & Control System Integration
Beyond local monitoring, the meter's detection data can be seamlessly transmitted to industrial control equipment (such as PLCs, RTUs, and SCADA systems) and host computers via standard communication protocols. This enables a unified, centralized measurement and control network, supporting remote data acquisition, real-time load analysis, energy consumption auditing, and automated power system management.
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With its robust measurement precision, compact DIN-rail form factor, and flexible integration capabilities, the SFM472 series meter is ideally suited for real-time power monitoring in 3P4W systems across manufacturing facilities, commercial buildings, data centers, and utility substations.
Technical Parameters
| Parameters | Index | |
|---|---|---|
| Input | Voltage | Voltage (Un): 3×57.7/100…240/415 VAC |
| Voltage range: 0.8Un – 1.15Un | ||
| Current | Directly connected: 0.25 – 5(80) A | |
| Overcurrent withstand: 30Imax for 0.01s | ||
| Frequency | 50 / 60 Hz | |
| Wiring | Connecting capacity: from 16 to 25 mm² | |
| Display | LCD with white backlight; Max reading: 999999 kWh | |
| Accuracy | Active energy: Class 1, Class B | |
| Output | Communication | Interface: RS485 | Protocol: Modbus RTU |
| Pulse | Pulse constant: 800 imp/kWh | |
| Power Consumption | < 2W / 10VA | |
| Withstand | AC Voltage | 4 kV / 1 min |
| DC Impulse | 6 kV – 1.2 µs waveform | |
| Climate Environment | Temperature | Operating: -25°C ~ +55°C |
| Storage: -40°C ~ +70°C | ||
| Humidity | ≤ 95% non-condensing, no corrosive gas | |
| Altitude | ≤ 2000 m | |
| Mechanical Environment | M1 | |
| Electromagnetic Environment | E2 | |
Frequently Asked Questions
Q What types of electrical parameters can the SFM472 series meter measure?
The SFM472 series meter measures a comprehensive range of electrical parameters including line-to-line and line-to-neutral RMS voltage, three-phase RMS current, active/reactive/apparent power (per phase and total), grid frequency, and both import and export active/reactive energy with cumulative metering.
Q Does the SFM472 support both local display and remote monitoring?
Yes. The SFM472 features an on-board LCD display with white backlight for local real-time parameter visualization. It also supports remote monitoring by transmitting data to PLCs, RTUs, SCADA systems, and host computers via RS485 / Modbus RTU communication protocol.
Q What is the communication interface and protocol used by the SFM472?
The SFM472 uses an RS485 interface with Modbus RTU protocol, making it fully compatible with most industrial control and SCADA systems for seamless integration into centralized measurement and control networks.
Q What are the operating temperature and environmental conditions for the SFM472?
The SFM472 operates reliably in temperatures ranging from -25°C to +55°C, with storage capability from -40°C to +70°C. It supports humidity levels up to 95% (non-condensing, no corrosive gas) and can be installed at altitudes up to 2000 m.
Q What is the accuracy class of the SFM472 energy meter?
The SFM472 achieves Class 1 and Class B accuracy for active energy measurement, meeting international standards for precision metering in commercial and industrial applications.
Q What applications is the SFM472 series meter best suited for?
The SFM472 is ideally suited for real-time power monitoring in 3-phase 4-wire (3P4W) electrical systems. Typical applications include manufacturing facilities, commercial buildings, data centers, and utility substations where accurate energy measurement and system integration are required.